<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        var arr = []
        var obj = {}
        Object.defineProperty(obj, 'likes', {
            configurable: true,
            enumerable: true,
            get() {
                return arr
            },
            set(){
                console.log('set')
            }
        })
        
        console.log(obj.likes)
        arr.push(12343)
    </script>
</body>

</html>